Greetings!

I am looking for therapists, medical, and psychiatric providers with expertise in adult ASD. I want to vet for quality but am uncertain as to what is the best process in doing so. I understand that HealthGrades & WebMD offer some frame of reference but feel like this is a bit of a populist's approach which may target the likability of a provider more than the total quality of their work. What is are best practices for finding quality providers?